EP3173190B1 - Disque abrasif à lamelles - Google Patents

Disque abrasif à lamelles Download PDF

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Publication number
EP3173190B1
EP3173190B1 EP16002501.1A EP16002501A EP3173190B1 EP 3173190 B1 EP3173190 B1 EP 3173190B1 EP 16002501 A EP16002501 A EP 16002501A EP 3173190 B1 EP3173190 B1 EP 3173190B1
Authority
EP
European Patent Office
Prior art keywords
abrasive
composite
disc
moulded
flap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16002501.1A
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German (de)
English (en)
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EP3173190A1 (fr
Inventor
Róg Stanislw
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Przedsiebiorstwo Pentar Stanislaw Rog
Original Assignee
Przedsiebiorstwo Pentar Stanislaw Rog
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Publication of EP3173190A1 publication Critical patent/EP3173190A1/fr
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Publication of EP3173190B1 publication Critical patent/EP3173190B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
    • B24D13/16—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face comprising pleated flaps or strips

Definitions

  • the object of the invention is an abrasive flap disc which is an abrasive tool for hand grinders, particularly angular ones, used in the processes of grinding and polishing of flat, curvilinear and irregular surfaces where the abrasive unit is manually pressed while being frontally positioned to an object being machined.
  • the abrasive disc with flexible abrasive surface of abrasive flaps which adapts itself to the shape of the surface being machined is used in the machining of various metal, natural and synthetic stone, plastic, ceramic and glass objects. Most frequently for smoothing welds, bending edges, removing surface defects of castings and forgings, removing old paint coatings, rust and oxide deposits.
  • Abrasive flap discs have a carrying disc with flexible frontal abrasive surface formed of many abrasive flaps glued to the near-edge ring zone of the disc.
  • the flaps trimmed out of textile weave covered with a coating of abrasive grains are fixed with their lower edges to the disc with identical angular spacings and subsequently overlapping one another in the circumferential direction in such a way that the rear edges of the flaps are exposed against the direction of rotations of the abrasive unit.
  • the carrying disc has a form of a round wheel with a hub set off in the central zone and a coaxial hole reinforced with a steel flange sleeve through which the abrasive unit is mounted on the spindle of the grinder.
  • the surface of the near-edge ring zone can be flat or conical.
  • the carrying discs of the abrasive flap units are loaded with complex forces, which results from principally point-wise and transversally oriented pressure bending the disc one-sidedly under the impact offorce applied by an employee on the wheel external edge zone.
  • Carrying discs are made of various materials: stainless steel, aluminium, hard composite board HDF made of pressed cellulose fibres, plastic (for example, according to the WO 0136160 description), composite material reinforced with meshes made of glass fibre and of carbon fibre (for example, according to US 2005170764 ).
  • the carrying disc has a form of layered polymer composite with reinforcement made of meshes of glass fibre with a weight ranging from 150 to 600 [g/m 2 ] bonded by a composite matrix.
  • the matrix contains fine cellulose waste saturated with thermosetting synthetic - phenolic, epoxy or polyester - resin or a mixture of these, wood wool, plant fibres and shredded cardboard.
  • the disc is formed in a thermal and pressure process at a temperature ranging from 100 to 130°C.
  • flap abrasive units presented in the descriptions EP 2433748 and US 5752876 having composite carrying discs with structural reinforcement composed of many meshes of glass fibre which are situated particularly at both frontal surfaces of the carrying disc and which are bonded by a composite matrix containing synthetic resin and fine-grained material in the form of abrasive grains: corundum, silicon carbide, boron nitride or others.
  • the carrying disc takes part jointly with abrasive flaps in grinding while it wears out circumferentially and its diameter is centripetally reduced.
  • the significantly diverse rigidity of the abrasive surfaces of the flaps and of the carrying disc, reducing the quality of the object surface, is not preferable. While grinding curvilinear surfaces to smooth them, it is important to obtain an approximately similar level of scratches on the entire surface being machined.
  • Flap abrasive units are fast-wearing tools; therefore, apart from meeting the required strength and the machining efficiency and quality, the material costs and the product price are also important.
  • the abrasive flap disc according to the invention has many technical features in common with abrasive units of the current state of the art but it stands out in that the fine-grained sand in its composite matrix is aninorganic, mineral or synthetic loose material, especially quartz, calcareous, carbonaceous or polymineral sand, industrial or quarry dusts, blast furnace orcopper slag, or a mixture of these materials, with a natural or crumbled grain size ranging from 0.06 to 2.0 mm and with hardness according to the Mohs scale ranging from 3 to 7.
  • a mesh of glass fibre with paper glued to it is moulded into the upper frontal surface and bonded through the inner layer of the composite matrix with a bare mesh of glass fibre moulded into the lower frontal surface under the abrasive flaps.
  • the solution of the abrasive unit according to the invention minimises the abrasive impact of the matrix on the surface being machined.
  • the edge-wise wear of the disc enabling access to new and sharp grains of the flaps in a zone closer to the rotation axis, mainly consists in that grains drop off and are pulled out of the matrix, which is particularly aided by the naturally ovoid shape of sand grains. The effect is a more homogeneous roughness parameter on the ground surface.
  • Fig. 1 presents the abrasive unit in the frontal view on the working surface with abrasive flaps
  • Fig.2 presents a cross-section view along the C-C line from Fig. 1
  • figures 3, 4 and 5 present a magnified detail "S" from Fig.2 in three, subsequently more durable structures of the carrying disc.
  • the abrasive flap disc consists of two elements: a carrying disc A and a set of abrasive flaps B.
  • the carrying disc A has a form of a round disc with a hub 1 which is set off in the central zone and in which a coaxial hole 2 is made, encased within a steel flange sleeve 3 designed for mounting the abrasive unit on the angular grinder spindle.
  • the ring surface of the near-edge zone 4 is, in this case, perpendicular to the axis of rotation.
  • lower edges of numerous abrasive flaps B which are rectangular in this embodiment are fixed with glue bonds 5 with regular spacings of the central angle.
  • the abrasive flaps B overlap one another subsequently in the circumferential direction in the location of the exposedrear edges.
  • the carrying disc A has a structure of a polymer composite with structural reinforcement consisting of at least two meshes made of 7.7p glass fibre.
  • a mesh of glass fibre with 7p paper glued to it is moulded into the upper frontal surface of the carrying disc A and bonded through the inner layer of the composite matrix 6 with a bare mesh of glass fibre (7) moulded into the lower frontal surface under the abrasive flaps (B).
  • the composite matrix 6 contains a binder of thermosetting synthetic resin, a fine-grained material and possibly conditioning additives.
  • the subsequent figures 4 and 5 of the drawing show embodiments with a higherstrength, with layers of bare mesh 7 penetrable for the volume of the composite matrix 6, the layers being additionally introduced into the inner structure.
  • the disc features increased rigidity caused by the addition of calfix and introduction of an additional mesh into the matrix layer.
  • a disc with 6 meshes of glass fibre, with diverse weight and weaves, bonded by a matrix with a smaller amount of the binder and filler features the required rigidity, good removal of particles from underneath the abrasive flaps, good discharge of heat and fluent wear of the carrying disc.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Laminated Bodies (AREA)

Claims (4)

  1. Disque abrasif à lamelles, contenant un disque porteur (A) sous la forme d'une roue ronde avec un moyeu (1) disposé dans la zone centrale et présentant un trou coaxial (2) renforcé par un manchon à bride en acier (3) pour monter l'unité abrasive sur une broche à rectifier, et où les bords inférieurs de nombreux lamelles abrasives (B) sont fixés par des liaisons de colle (5) à distance angulaire régulière sur le disque porteur (A), à sa surface annulaire frontale, à proximité du bord (4), plus distante du moyeu (1), les lamelles abrasives se chevauchent ensuite dans la direction circonférentielle de sorte que leurs bords arrière soient exposés, la roue du disque porteur (A) étant un composite polymère en couches avec un renforcement structurel constitué d'au moins deux mailles de fibre de verre (7p, 7) qui se trouvent sur les deux surfaces frontales du disque porteur (A) et qui sont liées par une matrice composite (6) contenant un liant d'une résine synthétique thermodurcissable et un matériau à grains fins, tous les composants du composite en couches étant reliés entre eux dans le procédé sous pression thermique, caractérisé en ce que le matériau à grains fins de la matrice composite (6) est un composé inorganique, minérale ou synthétique en vrac, en particulier du quartz, des sables calcaires ou carbonés ou du sable polyminéral, des poussières industrielles ou de carrière, des scories de haut-fourneau ou de cuivre, ou un mélange de ces matières, leurs valeurs granulométriques naturelles ou friables variant de 0,06 à 2,0 mm et la dureté selon l'échelle de Mohs variant de 3 à 7.
  2. Unité abrasive à lamelles selon la revendication 1 caractérisée en ce que le maille de fibres de verre avec du papier collé (7p) sur celui-ci est moulé dans la surface frontale supérieure et collé à travers la couche interne de la matrice composite (6) avec un maille nu de fibres de verre (7) moulé dans la surface frontale inférieure sous les lamelles abrasives (8).
  3. Unité abrasive à lamelles selon la revendication 2, caractérisée en ce que les deux mailles (7p, 7) moulées dans les surfaces frontales sont accolées à partir de la face interne par des mailles nues en fibre de verre (7).
  4. Unité abrasive à lamelles selon la revendication 3, caractérisée en ce que dans la couche interne de la matrice composite (6) est moulé au moins un maille nu en fibre de verre (7), séparés des deux côtés de ceux adjacents par des couches de la matrice composite (6).
EP16002501.1A 2015-11-27 2016-11-24 Disque abrasif à lamelles Active EP3173190B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL414987A PL229192B1 (pl) 2015-11-27 2015-11-27 Talerzowa ściernica listkowa

Publications (2)

Publication Number Publication Date
EP3173190A1 EP3173190A1 (fr) 2017-05-31
EP3173190B1 true EP3173190B1 (fr) 2019-07-10

Family

ID=57442416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16002501.1A Active EP3173190B1 (fr) 2015-11-27 2016-11-24 Disque abrasif à lamelles

Country Status (5)

Country Link
US (1) US10933510B2 (fr)
EP (1) EP3173190B1 (fr)
ES (1) ES2749454T3 (fr)
PL (1) PL229192B1 (fr)
WO (1) WO2017091093A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019005658U1 (de) 2019-10-25 2021-07-12 Marius Claassen Trägerplatte sowie Lamellenschleifscheibe umfassend diese Trägerplatte

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109320059A (zh) * 2018-10-25 2019-02-12 苏州安融石英有限公司 一种大口径石英管的对接工艺
DE102019128899B4 (de) * 2019-10-25 2021-06-10 Marius Claassen Verfahren zur Herstellung einer Trägerplatte für Lamellenschleifscheiben, Trägerplatte sowie Lamellenschleifscheibe umfassend diese Trägerplatte
CN110977802A (zh) * 2019-12-23 2020-04-10 郑州安信研磨科技有限公司 一种石材打磨片的制备方法
CN113496870B (zh) * 2020-04-03 2022-07-26 重庆超硅半导体有限公司 一种集成电路用硅片边缘形貌控制方法
CN114851096B (zh) * 2022-05-31 2023-09-05 西安交通大学 一种玻璃纤维金属复合结合剂超硬磨料砂轮及其制备方法

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US2024691A (en) * 1934-07-13 1935-12-17 Kent Robert Thurston Buffing wheel and method of making the same
US3120724A (en) * 1960-12-12 1964-02-11 Sylvester C Mockiewicz Buffing wheel
US4788088A (en) * 1985-10-04 1988-11-29 Kohl John O Apparatus and method of making a reinforced plastic laminate structure and products resulting therefrom
ES2031473T3 (es) * 1986-07-08 1992-12-16 Rudolf Leis Losa compound con capa de piedra natural
DE59008145D1 (de) 1990-03-23 1995-02-09 Lukas Erzett Schleif Fraes Schleifwerkzeug, Verfahren zu seiner Herstellung, und Verwendung eines besonderen Materials dafür.
US5231811A (en) * 1992-03-16 1993-08-03 Chicago Bridge & Iron Technical Services Company Storage structures with layered thermal finish covering
US5681612A (en) * 1993-06-17 1997-10-28 Minnesota Mining And Manufacturing Company Coated abrasives and methods of preparation
US5752876A (en) 1995-10-23 1998-05-19 Weiler Brush Company, Inc. Flap disc abrasive tool
US5951389A (en) * 1995-10-23 1999-09-14 Weiler Corporation Drive system for small diameter abrasive discs
US6152814A (en) * 1999-09-16 2000-11-28 Rp Abrasives & Machine Co. Inc. Expandable abrasive belt for use with inflatable tool
DE29920124U1 (de) 1999-11-16 2001-03-29 Klingspor Gmbh Verbrauchbare Rotationsscheibe zur Bearbeitung von Materialoberflächen mit einem Grundkörper aus spritzgegossenem Material, insbesondere Kunststoff
JP2002046073A (ja) * 2000-08-04 2002-02-12 Kanto Seito Kk 研磨用軟質孔あきディスク及びその製造方法
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KR200350452Y1 (ko) 2004-01-31 2004-05-13 태양연마 주식회사 연마휠의 백패드
ITMI20061516A1 (it) 2006-07-31 2008-02-01 Taf Abrasivi S P A Procedimento per la realizzazione di dischi abrasivi,nonche' dischi abrasivi ottenuti.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202019005658U1 (de) 2019-10-25 2021-07-12 Marius Claassen Trägerplatte sowie Lamellenschleifscheibe umfassend diese Trägerplatte

Also Published As

Publication number Publication date
PL229192B1 (pl) 2018-06-29
ES2749454T3 (es) 2020-03-20
US10933510B2 (en) 2021-03-02
WO2017091093A1 (fr) 2017-06-01
EP3173190A1 (fr) 2017-05-31
US20180369993A1 (en) 2018-12-27
WO2017091093A4 (fr) 2017-06-22
PL414987A1 (pl) 2017-06-05

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